as Enrico Rosseni

as Herta Rosseni

as Elizabeth Seccles (as Christine Galbo)

as Inspector Barth

as Professor Bascombe

as Brenda Pilchard

as Solange Beauregard

as Mrs. Erickson

as Mr. Erickson

as Janet Bryant

as Helen Edmonds

as Enrico's Landlord

as Father Webber

as Mr. Newton (as Antony Vernon)

as Ruth Holden (as Emilia Wolkowich)

as Mr. Bryant

as Father Herbert

as Mr. Leach, the Headmaster

as Susan, a Student

as CID Officer w / The Daily Telegraph (uncredited)

as Joseph Kane (uncredited)

as Man at Church (uncredited)

as Phillip Sullivan (voice) (uncredited)

as Brenda's Mother (uncredited)

as Edgar Wallace (voice) (archive footage) (uncredited)

as Policeman (uncredited)

as Woman in church (uncredited)